Ekstam, B., B. Johansson, P. Dinnétz, and P. Ellström. “Predicting Risk Habitats for the Transmission of the Small Liver Fluke, Dicrocoelium Dendriticum to Grazing Ruminants”. Geospatial Health, vol. 6, no. 1, Nov. 2011, pp. 125-31, doi:10.4081/gh.2011.164.